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Streptokinase increases luxury perfusion after stroke

B Infeld1, S M Davis, G A Donnan

  • 1Department of Neurology, Royal Melbourne Hospital, Victoria, Australia. bernardi@neuro.medrmh.unimelb.edu.au

Stroke
|September 1, 1996
PubMed
Summary

Intravenous streptokinase may increase adverse stroke outcomes by augmenting luxury perfusion, a type of reperfusion linked to poorer functional results and potential reperfusion injury.

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Area of Science:

  • Neurology
  • Radiology
  • Pharmacology

Background:

  • Intravenous streptokinase use in acute stroke trials has been linked to adverse outcomes.
  • Understanding reperfusion patterns and their clinical impact is crucial for stroke management.

Purpose of the Study:

  • To investigate the effect of streptokinase on reperfusion characteristics in acute stroke.
  • To determine the relationship between streptokinase-induced reperfusion and clinical outcomes.

Main Methods:

  • 24 patients with acute middle cerebral cortical infarction were studied.
  • Single-photon emission CT (SPECT) with 99mTc-hexamethylpropyleneamine oxime was used to assess infarct hypoperfusion.
  • Neurological impairment and functional outcomes were evaluated using validated scales.

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Main Results:

  • No significant difference in early reperfusion was observed between streptokinase and placebo groups.
  • Streptokinase was associated with increased "luxury perfusion" (non-nutritional reperfusion) compared to placebo (P = .04).
  • This luxury perfusion correlated with poorer functional outcomes (P = .02).

Conclusions:

  • Streptokinase appears to enhance luxury perfusion following acute stroke.
  • Luxury perfusion is associated with worse clinical outcomes, potentially due to reperfusion injury.